fix: Remove ERNIE 21B Q3 variant, keep only TQ1_0

- Removed ernie_21b_thinking_q2 (IQ3_XXS from mradermacher)
- Keeping only ernie_21b_thinking_q1 (TQ1_0 from unsloth)
- Model issue confirmed - Q3 variant had same problems as Q2

app.py

@@ -218,20 +218,6 @@ AVAILABLE_MODELS = {
             "repeat_penalty": 1.1,
         },
     },
-    "ernie_21b_thinking_q2": {
-        "name": "ERNIE-4.5 21B Thinking Q3 (128K Context)",
-        "repo_id": "mradermacher/ERNIE-4.5-21B-A3B-Thinking-i1-GGUF",
-        "filename": "*IQ3_XXS.gguf",
-        "max_context": 131072,
-        "default_temperature": 0.8,
-        "supports_toggle": False,
-        "inference_settings": {
-            "temperature": 0.8,
-            "top_p": 0.95,
-            "top_k": 40,
-            "repeat_penalty": 1.1,
-        },
-    },
 }
 
 DEFAULT_MODEL_KEY = "qwen3_600m_q4"